Ralf Schneider's changes to enhance to OSI CLNP, CLTP, and ISIS support

and to add OSI ESIS support.

svn path=/trunk/; revision=1865

1 files changed, 69 insertions, 0 deletions

diff --git a/packet-esis.h b/packet-esis.h
new file mode 100644
index 0000000000..c6e49b24a7
--- /dev/null
+++ b/packet-esis.h
@@ -0,0 +1,69 @@
+/* packet-esis.h
+ * Defines and such for ESIS protocol decode.
+ *
+ * $Id: packet-esis.h,v 1.1 2000/04/15 22:11:09 guy Exp $
+ * Ralf Schneider <Ralf.Schneider@t-online.de>
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ *
+ */
+
+#ifndef _PACKET_ESIS_H
+#define _PACKET_ESIS_H
+
+/* The version we support is 1 */
+#define ESIS_REQUIRED_VERSION    1
+
+/* ESIS PDU types */
+#define ESIS_ESH_PDU    02
+#define ESIS_ISH_PDU    04
+#define ESIS_RD_PDU     06
+
+/* The length of the fixed part */
+#define ESIS_HDR_FIXED_LENGTH 9
+
+/* Inline Defines for masking */
+#define esis_type esis_type_reserved&OSI_PDU_TYPE_MASK
+#define esis_r8   esis_type_reserved&BIT_8
+#define esis_r7   esis_type_reserved&BIT_7
+#define esis_r6   esis_type_reserved&BIT_6
+
+/* The fixed part (9 octets) of the ESIS protocol header */
+typedef struct {
+  guint8 esis_nlpi;           /* Network Layer Protocol Identifier == 0x82   */
+  guint8 esis_length;         /* Header ( PDU too, NoData ) length in octets */
+  guint8 esis_version;        /* ISIS version, must be 0x01 */
+  guint8 esis_reserved;       /* reserved byte, must be 0   */
+  guint8 esis_type_reserved;  /* packet type & MS-Bits (8-6) reserved */
+  guint8 esis_holdtime[2];    /* Maximum time (sec) this PDU is valid */
+  guint8 esis_checksum[2];    /* Computed on whole PDU Header, 0 means ignore */
+} esis_hdr_t;
+
+/*
+ * published API functions
+ */ 
+extern void dissect_esis(const u_char *pd, int offset, frame_data *fd, 
+                         proto_tree *tree);
+extern void proto_register_esis(void);
+extern void esis_dissect_unknown(int offset,guint length, proto_tree *tree,
+                                 frame_data *fd, char *fmat, ...);
+
+#endif /* _PACKET_ESIS_H */